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Why Different Airport Callsigns?  
User currently onlineBruce From United States of America, joined May 1999, 5057 posts, RR: 15
Posted (12 years 3 months 3 weeks 2 days 3 hours ago) and read 1853 times:

Why are there 2 sets of callsigns for airports? MIA is also known as KMIA, Prestwick is known as PIK or EGPK? And Heathrow (I think) is EGLL or LHR? Are most airports in Europe known by E___? In Mexico you have MMMX or MEX.

different letters gets confusing!!!!!!!!!


bruce


Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
7 replies: All unread, jump to last
 
User currently offlineLindy From , joined Dec 1969, posts, RR:
Reply 1, posted (12 years 3 months 3 weeks 2 days 3 hours ago) and read 1841 times:

If I am correct those are ICAO and IATA codes.

User currently offlineDonder10 From Canada, joined Oct 2001, 6660 posts, RR: 21
Reply 2, posted (12 years 3 months 3 weeks 2 days 3 hours ago) and read 1839 times:

2 different systems.
4 letter US codes are just K+3letter code.Canda is C+3 letter code.


User currently offlineFlight Level From , joined Dec 1969, posts, RR:
Reply 3, posted (12 years 3 months 3 weeks 2 days 3 hours ago) and read 1840 times:

IATA is 3-letter.

ICAO is 4 letter.

I usually go by the IATA codes. However, pilots use ICAO for navigational purposes.


User currently onlineBruce From United States of America, joined May 1999, 5057 posts, RR: 15
Reply 4, posted (12 years 3 months 3 weeks 1 day 17 hours ago) and read 1793 times:

Ok, but why do we even need 2 different systems anyway?


bruce



Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens
User currently offlineTsentsan From Singapore, joined Jan 2002, 2016 posts, RR: 15
Reply 5, posted (12 years 3 months 3 weeks 1 day 17 hours ago) and read 1788 times:

One's for travel agents (IATA)
One's for FMS navigation (ICAO)



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User currently offlineConcorde1518 From United States of America, joined May 2001, 746 posts, RR: 0
Reply 6, posted (12 years 3 months 3 weeks 1 day 17 hours ago) and read 1786 times:

IACO codes are pretty much unheard of by passengers... Most people think that pilots refer to VHHH as HKG just like them...... My guess as to why there are two is that there are so many airports out there that the last three letters are bound to be repeated somewhere in the world. Therefore, if we add a letter in front depending on country and make it so the code DOESN'T necessarily reflect the name of the airport, there can be less confusion from differentiating between airports.... Airlines probably use the IATA codes for passengers, because no passenger will ever remember to use "EGLL", or "VHHH", so, they will use simple things like HKG or LHR....

Just a guess....
 Smile


User currently offlineFoghorn From United Kingdom, joined Nov 2001, 18 posts, RR: 0
Reply 7, posted (12 years 3 months 3 weeks 1 day 1 hour ago) and read 1739 times:

ICAO codes are not just for airports - they are 'location codes'. For instance Flight Information Regions, en-route Air Traffic Control centres and a variety of other aviation-related offices also have ICAO codes e.g. EGTT for the London FIR. This allows messages usung the AFTN (Aviation Fixed Telecommunication Network) to reach their intended recipients globally in a standardised way.

The ICAO codes are used almost exclusively within aviation (except occasionally when facing passengers). and are much more comprehensive than the IATA codes.

On the other hand, the three letter IATA codes were designed for travel agents (IATA = International Association of Travel Agents).


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